#!/bin/bash

if [ "$#" -ne 2 ]; then
    echo "usage ts2mkv.sh [path to vdr recording] [path to movies]";
    exit 1;
fi

if [ ! -d "$1" ]; then
    echo "vdr recording directory not valid: $1";
    exit 1;
fi

if [ ! -d "$2" ]; then
    echo "movie directory not valid: $2";
    exit 1;
fi

echo "vdr recordings directory: $1";
echo "movie directory: $2";

echo "changing into vdr recordings directory '$1'";
cd $1;

echo `pwd`

FILE_LIST="$1/tomkv.lst"
while IFS= read -r LINE
do
    echo "processing directory '$LINE'";
    cd "$LINE";
    for j in *.rec; do
        cd $j;
        MOVIENAME=$(sed -n -e 's/^T \(.*\)$/\1/p' "info");
        DEST_NAME="$2/$MOVIENAME/$MOVIENAME.mkv"
        TRIMMED_NAME="$MOVIENAME.trimmed.ts"
        if [ ! -f "$DEST_NAME" ]; then
            echo "converting $MOVIENAME";
            STAMPS=($(sed -n -e 's/^\([0-9:]\+.[0-9]\{2\}\).*$/\1/p' "marks"))
            if [ "${#STAMPS[@]}" -ne "2" ]; then
                echo "more than two cut marks found; skipping";
		        echo "${#STAMPS[@]}";
                cd ..;
                continue;
            fi;
            echo "trimming form ${STAMPS[0]} to ${STAMPS[1]}";
            FILENAMES=$(ls *.ts | paste -sd "|" -);
            if [ ! -f "$TRIMMED_NAME" ]; then
                echo ffmpeg -nostdin -i "concat:$FILENAMES" -ss ${STAMPS[0]} -to ${STAMPS[1]} -c:v copy -c:a copy "$TRIMMED_NAME";
                ffmpeg -nostdin -i "concat:$FILENAMES" -ss ${STAMPS[0]} -to ${STAMPS[1]} -c:v copy -c:a copy "$TRIMMED_NAME";
            fi
    
            if [ ! -d "$2/$MOVIENAME" ]; then
                mkdir "$2/$MOVIENAME";
            fi

            echo ffmpeg -nostdin -i "$TRIMMED_NAME" -c:v libx264 -c:a copy "$DEST_NAME";
            ffmpeg -nostdin -i "$TRIMMED_NAME" -c:v libx264 -c:a copy "$DEST_NAME";
        else
            echo "video file $DEST_NAME already exists; skipping";
        fi
        cd ..;
    done;
    cd ..;
done < "$FILE_LIST"